Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 1 | #!/usr/bin/python |
| 2 | |
| 3 | # Python OpenType Layout Subsetter |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 4 | # |
| 5 | # Copyright 2013 Google, Inc. All Rights Reserved. |
| 6 | # |
| 7 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | # you may not use this file except in compliance with the License. |
| 9 | # You may obtain a copy of the License at |
| 10 | # |
| 11 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | # |
| 13 | # Unless required by applicable law or agreed to in writing, software |
| 14 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | # See the License for the specific language governing permissions and |
| 17 | # limitations under the License. |
| 18 | # |
| 19 | # Google Author(s): Behdad Esfahbod |
| 20 | # |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 21 | |
| 22 | import fontTools.ttx |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 23 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 24 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 25 | def add_method (*clazzes): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 26 | def wrapper(method): |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 27 | for clazz in clazzes: |
| 28 | setattr (clazz, method.func_name, method) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 29 | return wrapper |
| 30 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 31 | def unique_sorted (l): |
| 32 | return sorted ({v:1 for v in l}.keys ()) |
| 33 | |
| 34 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 35 | @add_method(fontTools.ttLib.tables.otTables.Coverage) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 36 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | d821ea0 | 2013-07-23 10:50:43 -0400 | [diff] [blame] | 37 | "Returns ascending list of remaining coverage values." |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 38 | indices = [i for (i,g) in enumerate (self.glyphs) if g in glyphs] |
| 39 | self.glyphs = [g for g in self.glyphs if g in glyphs] |
| 40 | return indices |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 41 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 42 | @add_method(fontTools.ttLib.tables.otTables.ClassDef) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 43 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 4aa6ce3 | 2013-07-22 12:15:36 -0400 | [diff] [blame] | 44 | "Returns ascending list of remaining classes." |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 45 | self.classDefs = {g:v for g,v in self.classDefs.items() if g in glyphs} |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 46 | return unique_sorted (self.classDefs.values ()) |
Behdad Esfahbod | 4aa6ce3 | 2013-07-22 12:15:36 -0400 | [diff] [blame] | 47 | |
| 48 | @add_method(fontTools.ttLib.tables.otTables.ClassDef) |
| 49 | def remap (self, class_map): |
| 50 | "Remaps classes." |
| 51 | self.classDefs = {g:class_map.index (v) for g,v in self.classDefs.items()} |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 52 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 53 | @add_method(fontTools.ttLib.tables.otTables.SingleSubst) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 54 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 55 | if self.Format in [1, 2]: |
| 56 | self.mapping = {g:v for g,v in self.mapping.items() if g in glyphs} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 57 | return bool (self.mapping) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 58 | else: |
| 59 | assert 0, "unknown format: %s" % self.Format |
| 60 | |
| 61 | @add_method(fontTools.ttLib.tables.otTables.MultipleSubst) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 62 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 63 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 64 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 65 | self.Sequence = [self.Sequence[i] for i in indices] |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 66 | self.SequenceCount = len (self.Sequence) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 67 | return bool (self.SequenceCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 68 | else: |
| 69 | assert 0, "unknown format: %s" % self.Format |
| 70 | |
| 71 | @add_method(fontTools.ttLib.tables.otTables.AlternateSubst) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 72 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 73 | if self.Format == 1: |
| 74 | self.alternates = {g:v for g,v in self.alternates.items() if g in glyphs} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 75 | return bool (self.alternates) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 76 | else: |
| 77 | assert 0, "unknown format: %s" % self.Format |
| 78 | |
| 79 | @add_method(fontTools.ttLib.tables.otTables.LigatureSubst) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 80 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 81 | if self.Format == 1: |
| 82 | self.ligatures = {g:v for g,v in self.ligatures.items() if g in glyphs} |
| 83 | self.ligatures = {g:[seq for seq in seqs if all(c in glyphs for c in seq.Component)] |
| 84 | for g,seqs in self.ligatures.items()} |
| 85 | self.ligatures = {g:v for g,v in self.ligatures.items() if v} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 86 | return bool (self.ligatures) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 87 | else: |
| 88 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 89 | |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 90 | @add_method(fontTools.ttLib.tables.otTables.ReverseChainSingleSubst) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 91 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 92 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 93 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 94 | self.Substitute = [self.Substitute[i] for i in indices] |
| 95 | self.GlyphCount = len (self.Substitute) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 96 | return bool (self.GlyphCount and all (c.subset_glyphs (glyphs) for c in self.LookAheadCoverage + self.BacktrackCoverage)) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 97 | else: |
| 98 | assert 0, "unknown format: %s" % self.Format |
| 99 | |
| 100 | @add_method(fontTools.ttLib.tables.otTables.SinglePos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 101 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 102 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 103 | return len (self.Coverage.subset_glyphs (glyphs)) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 104 | elif self.Format == 2: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 105 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 106 | self.Value = [self.Value[i] for i in indices] |
| 107 | self.ValueCount = len (self.Value) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 108 | return bool (self.ValueCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 109 | else: |
| 110 | assert 0, "unknown format: %s" % self.Format |
| 111 | |
| 112 | @add_method(fontTools.ttLib.tables.otTables.PairPos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 113 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 114 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 115 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 116 | self.PairSet = [self.PairSet[i] for i in indices] |
| 117 | for p in self.PairSet: |
| 118 | p.PairValueRecord = [r for r in p.PairValueRecord if r.SecondGlyph in glyphs] |
| 119 | p.PairValueCount = len (p.PairValueRecord) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 120 | self.PairSet = [p for p in self.PairSet if p.PairValueCount] |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 121 | self.PairSetCount = len (self.PairSet) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 122 | return bool (self.PairSetCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 123 | elif self.Format == 2: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 124 | class1_map = self.ClassDef1.subset_glyphs (glyphs) |
| 125 | class2_map = self.ClassDef2.subset_glyphs (glyphs) |
Behdad Esfahbod | 4aa6ce3 | 2013-07-22 12:15:36 -0400 | [diff] [blame] | 126 | self.ClassDef1.remap (class1_map) |
| 127 | self.ClassDef2.remap (class2_map) |
| 128 | self.Class1Record = [self.Class1Record[i] for i in class1_map] |
| 129 | for c in self.Class1Record: |
| 130 | c.Class2Record = [c.Class2Record[i] for i in class2_map] |
| 131 | self.Class1Count = len (class1_map) |
| 132 | self.Class2Count = len (class2_map) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 133 | return bool (self.Class1Count and self.Class2Count and self.Coverage.subset_glyphs (glyphs)) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 134 | else: |
| 135 | assert 0, "unknown format: %s" % self.Format |
| 136 | |
| 137 | @add_method(fontTools.ttLib.tables.otTables.CursivePos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 138 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 139 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 140 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 141 | self.EntryExitRecord = [self.EntryExitRecord[i] for i in indices] |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 142 | self.EntryExitCount = len (self.EntryExitRecord) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 143 | return bool (self.EntryExitCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 144 | else: |
| 145 | assert 0, "unknown format: %s" % self.Format |
| 146 | |
| 147 | @add_method(fontTools.ttLib.tables.otTables.MarkBasePos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 148 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 149 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 150 | mark_indices = self.MarkCoverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 151 | self.MarkArray.MarkRecord = [self.MarkArray.MarkRecord[i] for i in mark_indices] |
| 152 | self.MarkArray.MarkCount = len (self.MarkArray.MarkRecord) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 153 | base_indices = self.BaseCoverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 154 | self.BaseArray.BaseRecord = [self.BaseArray.BaseRecord[i] for i in base_indices] |
| 155 | self.BaseArray.BaseCount = len (self.BaseArray.BaseRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 156 | # Prune empty classes |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 157 | class_indices = unique_sorted (v.Class for v in self.MarkArray.MarkRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 158 | self.ClassCount = len (class_indices) |
| 159 | for m in self.MarkArray.MarkRecord: |
| 160 | m.Class = class_indices.index (m.Class) |
| 161 | for b in self.BaseArray.BaseRecord: |
| 162 | b.BaseAnchor = [b.BaseAnchor[i] for i in class_indices] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 163 | return bool (self.ClassCount and self.MarkArray.MarkCount and self.BaseArray.BaseCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 164 | else: |
| 165 | assert 0, "unknown format: %s" % self.Format |
| 166 | |
| 167 | @add_method(fontTools.ttLib.tables.otTables.MarkLigPos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 168 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 169 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 170 | mark_indices = self.MarkCoverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 171 | self.MarkArray.MarkRecord = [self.MarkArray.MarkRecord[i] for i in mark_indices] |
| 172 | self.MarkArray.MarkCount = len (self.MarkArray.MarkRecord) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 173 | ligature_indices = self.LigatureCoverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 174 | self.LigatureArray.LigatureAttach = [self.LigatureArray.LigatureAttach[i] for i in ligature_indices] |
| 175 | self.LigatureArray.LigatureCount = len (self.LigatureArray.LigatureAttach) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 176 | # Prune empty classes |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 177 | class_indices = unique_sorted (v.Class for v in self.MarkArray.MarkRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 178 | self.ClassCount = len (class_indices) |
| 179 | for m in self.MarkArray.MarkRecord: |
| 180 | m.Class = class_indices.index (m.Class) |
| 181 | for l in self.LigatureArray.LigatureAttach: |
| 182 | for c in l.ComponentRecord: |
| 183 | c.LigatureAnchor = [c.LigatureAnchor[i] for i in class_indices] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 184 | return bool (self.ClassCount and self.MarkArray.MarkCount and self.LigatureArray.LigatureCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 185 | else: |
| 186 | assert 0, "unknown format: %s" % self.Format |
| 187 | |
| 188 | @add_method(fontTools.ttLib.tables.otTables.MarkMarkPos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 189 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 190 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 191 | mark1_indices = self.Mark1Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 192 | self.Mark1Array.MarkRecord = [self.Mark1Array.MarkRecord[i] for i in mark1_indices] |
| 193 | self.Mark1Array.MarkCount = len (self.Mark1Array.MarkRecord) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 194 | mark2_indices = self.Mark2Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 195 | self.Mark2Array.Mark2Record = [self.Mark2Array.Mark2Record[i] for i in mark2_indices] |
| 196 | self.Mark2Array.MarkCount = len (self.Mark2Array.Mark2Record) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 197 | # Prune empty classes |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 198 | class_indices = unique_sorted (v.Class for v in self.Mark1Array.MarkRecord) |
Behdad Esfahbod | c6396b7 | 2013-07-22 12:31:33 -0400 | [diff] [blame] | 199 | self.ClassCount = len (class_indices) |
| 200 | for m in self.Mark1Array.MarkRecord: |
| 201 | m.Class = class_indices.index (m.Class) |
| 202 | for b in self.Mark2Array.Mark2Record: |
| 203 | b.Mark2Anchor = [b.Mark2Anchor[i] for i in class_indices] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 204 | return bool (self.ClassCount and self.Mark1Array.MarkCount and self.Mark2Array.MarkCount) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 205 | else: |
| 206 | assert 0, "unknown format: %s" % self.Format |
| 207 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 208 | @add_method(fontTools.ttLib.tables.otTables.SingleSubst, |
| 209 | fontTools.ttLib.tables.otTables.MultipleSubst, |
| 210 | fontTools.ttLib.tables.otTables.AlternateSubst, |
| 211 | fontTools.ttLib.tables.otTables.LigatureSubst, |
| 212 | fontTools.ttLib.tables.otTables.ReverseChainSingleSubst, |
| 213 | fontTools.ttLib.tables.otTables.SinglePos, |
| 214 | fontTools.ttLib.tables.otTables.PairPos, |
| 215 | fontTools.ttLib.tables.otTables.CursivePos, |
| 216 | fontTools.ttLib.tables.otTables.MarkBasePos, |
| 217 | fontTools.ttLib.tables.otTables.MarkLigPos, |
| 218 | fontTools.ttLib.tables.otTables.MarkMarkPos) |
| 219 | def subset_lookups (self, lookup_indices): |
| 220 | pass |
| 221 | |
| 222 | @add_method(fontTools.ttLib.tables.otTables.SingleSubst, |
| 223 | fontTools.ttLib.tables.otTables.MultipleSubst, |
| 224 | fontTools.ttLib.tables.otTables.AlternateSubst, |
| 225 | fontTools.ttLib.tables.otTables.LigatureSubst, |
| 226 | fontTools.ttLib.tables.otTables.ReverseChainSingleSubst, |
| 227 | fontTools.ttLib.tables.otTables.SinglePos, |
| 228 | fontTools.ttLib.tables.otTables.PairPos, |
| 229 | fontTools.ttLib.tables.otTables.CursivePos, |
| 230 | fontTools.ttLib.tables.otTables.MarkBasePos, |
| 231 | fontTools.ttLib.tables.otTables.MarkLigPos, |
| 232 | fontTools.ttLib.tables.otTables.MarkMarkPos) |
| 233 | def collect_lookups (self): |
| 234 | return [] |
| 235 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 236 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ContextPos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 237 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 238 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 239 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | b7fef90 | 2013-07-21 22:48:08 -0400 | [diff] [blame] | 240 | self.SubRuleSet = [self.SubRuleSet[i] for i in indices] |
| 241 | self.SubRuleSetCount = len (self.SubRuleSet) |
| 242 | for rs in self.SubRuleSet: |
| 243 | rs.SubRule = [r for r in rs.SubRule |
| 244 | if all (g in glyphs for g in r.Input)] |
| 245 | rs.SubRuleCount = len (rs.SubRule) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 246 | # Prune empty subrulesets |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 247 | return bool (self.SubRuleSetCount) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 248 | elif self.Format == 2: |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 249 | return bool (self.Coverage.subset_glyphs (glyphs) and self.ClassDef.subset_glyphs (glyphs)) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 250 | elif self.Format == 3: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 251 | return all (c.subset_glyphs (glyphs) for c in self.Coverage) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 252 | else: |
| 253 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 254 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 255 | @add_method(fontTools.ttLib.tables.otTables.ChainContextSubst, fontTools.ttLib.tables.otTables.ChainContextPos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 256 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 257 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 258 | indices = self.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | b7fef90 | 2013-07-21 22:48:08 -0400 | [diff] [blame] | 259 | self.ChainSubRuleSet = [self.ChainSubRuleSet[i] for i in indices] |
| 260 | self.ChainSubRuleSetCount = len (self.ChainSubRuleSet) |
| 261 | for rs in self.ChainSubRuleSet: |
| 262 | rs.ChainSubRule = [r for r in rs.ChainSubRule |
| 263 | if all (g in glyphs for g in r.Backtrack + r.Input + r.LookAhead)] |
| 264 | rs.ChainSubRuleCount = len (rs.ChainSubRule) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 265 | # Prune empty subrulesets |
| 266 | return self.ChainSubRuleSetCount |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 267 | elif self.Format == 2: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 268 | return self.Coverage.subset_glyphs (glyphs) and \ |
| 269 | self.LookAheadClassDef.subset_glyphs (glyphs) and \ |
| 270 | self.BacktrackClassDef.subset_glyphs (glyphs) and \ |
| 271 | self.InputClassDef.subset_glyphs (glyphs) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 272 | elif self.Format == 3: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 273 | return all (c.subset_glyphs (glyphs) for c in self.InputCoverage + self.LookAheadCoverage + self.BacktrackCoverage) |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 274 | else: |
| 275 | assert 0, "unknown format: %s" % self.Format |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 276 | |
Behdad Esfahbod | f2ecc9c | 2013-07-23 12:40:35 -0400 | [diff] [blame] | 277 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ChainContextSubst) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 278 | def subset_lookups (self, lookup_indices): |
| 279 | self.SubstLookupRecord = [ll for ll in self.SubstLookupRecord if ll.LookupListIndex in lookup_indices] |
| 280 | for ll in self.SubstLookupRecord: |
| 281 | ll.LookupListIndex = lookup_indices.index (ll.LookupListIndex) |
| 282 | |
Behdad Esfahbod | f2ecc9c | 2013-07-23 12:40:35 -0400 | [diff] [blame] | 283 | @add_method(fontTools.ttLib.tables.otTables.ContextPos, fontTools.ttLib.tables.otTables.ChainContextPos) |
| 284 | def subset_lookups (self, lookup_indices): |
| 285 | self.PosLookupRecord = [ll for ll in self.PosLookupRecord if ll.LookupListIndex in lookup_indices] |
| 286 | for ll in self.PosLookupRecord: |
| 287 | ll.LookupListIndex = lookup_indices.index (ll.LookupListIndex) |
| 288 | |
| 289 | @add_method(fontTools.ttLib.tables.otTables.ContextSubst, fontTools.ttLib.tables.otTables.ChainContextSubst) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 290 | def collect_lookups (self): |
| 291 | return [ll.LookupListIndex for ll in self.SubstLookupRecord] |
| 292 | |
Behdad Esfahbod | f2ecc9c | 2013-07-23 12:40:35 -0400 | [diff] [blame] | 293 | @add_method(fontTools.ttLib.tables.otTables.ContextPos, fontTools.ttLib.tables.otTables.ChainContextPos) |
| 294 | def collect_lookups (self): |
| 295 | return [ll.LookupListIndex for ll in self.PosLookupRecord] |
| 296 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 297 | @add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, fontTools.ttLib.tables.otTables.ExtensionPos) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 298 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 299 | if self.Format == 1: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 300 | return self.ExtSubTable.subset_glyphs (glyphs) |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 301 | else: |
| 302 | assert 0, "unknown format: %s" % self.Format |
| 303 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 304 | @add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, fontTools.ttLib.tables.otTables.ExtensionPos) |
| 305 | def subset_lookups (self, lookup_indices): |
| 306 | if self.Format == 1: |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 307 | self.ExtSubTable.subset_lookups (lookup_indices) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 308 | else: |
| 309 | assert 0, "unknown format: %s" % self.Format |
| 310 | |
| 311 | @add_method(fontTools.ttLib.tables.otTables.ExtensionSubst, fontTools.ttLib.tables.otTables.ExtensionPos) |
| 312 | def collect_lookups (self): |
| 313 | if self.Format == 1: |
| 314 | return self.ExtSubTable.collect_lookups () |
| 315 | else: |
| 316 | assert 0, "unknown format: %s" % self.Format |
| 317 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 318 | @add_method(fontTools.ttLib.tables.otTables.Lookup) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 319 | def subset_glyphs (self, glyphs): |
| 320 | self.SubTable = [s for s in self.SubTable if s.subset_glyphs (glyphs)] |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 321 | self.SubTableCount = len (self.SubTable) |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 322 | return bool (self.SubTableCount) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 323 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 324 | @add_method(fontTools.ttLib.tables.otTables.Lookup) |
| 325 | def subset_lookups (self, lookup_indices): |
| 326 | for s in self.SubTable: |
| 327 | s.subset_lookups (lookup_indices) |
| 328 | |
| 329 | @add_method(fontTools.ttLib.tables.otTables.Lookup) |
| 330 | def collect_lookups (self): |
| 331 | return unique_sorted (sum ((s.collect_lookups () for s in self.SubTable), [])) |
| 332 | |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 333 | @add_method(fontTools.ttLib.tables.otTables.LookupList) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 334 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 335 | "Returns the indices of nonempty lookups." |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 336 | return [i for (i,l) in enumerate (self.Lookup) if l.subset_glyphs (glyphs)] |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 337 | |
| 338 | @add_method(fontTools.ttLib.tables.otTables.LookupList) |
| 339 | def subset_lookups (self, lookup_indices): |
| 340 | self.Lookup = [self.Lookup[i] for i in lookup_indices] |
| 341 | self.LookupCount = len (self.Lookup) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 342 | for l in self.Lookup: |
| 343 | l.subset_lookups (lookup_indices) |
| 344 | |
| 345 | @add_method(fontTools.ttLib.tables.otTables.LookupList) |
| 346 | def closure_lookups (self, lookup_indices): |
| 347 | while True: |
| 348 | recurse_lookups = sum ((self.Lookup[i].collect_lookups () for i in lookup_indices), []) |
| 349 | recurse_lookups = [l for l in recurse_lookups if l not in lookup_indices] |
| 350 | if not recurse_lookups: |
| 351 | return lookup_indices |
| 352 | lookup_indices = unique_sorted (lookup_indices + recurse_lookups) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 353 | |
| 354 | @add_method(fontTools.ttLib.tables.otTables.Feature) |
| 355 | def subset_lookups (self, lookup_indices): |
| 356 | self.LookupListIndex = [l for l in self.LookupListIndex if l in lookup_indices] |
| 357 | # Now map them. |
| 358 | self.LookupListIndex = [lookup_indices.index (l) for l in self.LookupListIndex] |
| 359 | self.LookupCount = len (self.LookupListIndex) |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 360 | return self.LookupCount |
Behdad Esfahbod | 5466061 | 2013-07-21 18:16:55 -0400 | [diff] [blame] | 361 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 362 | @add_method(fontTools.ttLib.tables.otTables.Feature) |
| 363 | def collect_lookups (self): |
| 364 | return self.LookupListIndex[:] |
| 365 | |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 366 | @add_method(fontTools.ttLib.tables.otTables.FeatureList) |
| 367 | def subset_lookups (self, lookup_indices): |
| 368 | "Returns the indices of nonempty features." |
| 369 | feature_indices = [i for (i,f) in enumerate (self.FeatureRecord) if f.Feature.subset_lookups (lookup_indices)] |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 370 | self.subset_features (feature_indices) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 371 | return feature_indices |
| 372 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 373 | @add_method(fontTools.ttLib.tables.otTables.FeatureList) |
| 374 | def collect_lookups (self, feature_indices): |
| 375 | return unique_sorted (sum ((self.FeatureRecord[i].Feature.collect_lookups () for i in feature_indices |
| 376 | if i < self.FeatureCount), [])) |
| 377 | |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 378 | @add_method(fontTools.ttLib.tables.otTables.FeatureList) |
| 379 | def subset_features (self, feature_indices): |
| 380 | self.FeatureRecord = [self.FeatureRecord[i] for i in feature_indices] |
| 381 | self.FeatureCount = len (self.FeatureRecord) |
| 382 | return bool (self.FeatureCount) |
| 383 | |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 384 | @add_method(fontTools.ttLib.tables.otTables.DefaultLangSys, fontTools.ttLib.tables.otTables.LangSys) |
| 385 | def subset_features (self, feature_indices): |
Behdad Esfahbod | 69ce150 | 2013-07-22 18:00:31 -0400 | [diff] [blame] | 386 | if self.ReqFeatureIndex in feature_indices: |
| 387 | self.ReqFeatureIndex = feature_indices.index (self.ReqFeatureIndex) |
| 388 | else: |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 389 | self.ReqFeatureIndex = 65535 |
| 390 | self.FeatureIndex = [f for f in self.FeatureIndex if f in feature_indices] |
Behdad Esfahbod | 69ce150 | 2013-07-22 18:00:31 -0400 | [diff] [blame] | 391 | # Now map them. |
| 392 | self.FeatureIndex = [feature_indices.index (f) for f in self.FeatureIndex if f in feature_indices] |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 393 | self.FeatureCount = len (self.FeatureIndex) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 394 | return bool (self.FeatureCount or self.ReqFeatureIndex != 65535) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 395 | |
| 396 | @add_method(fontTools.ttLib.tables.otTables.DefaultLangSys, fontTools.ttLib.tables.otTables.LangSys) |
| 397 | def collect_features (self): |
| 398 | feature_indices = self.FeatureIndex[:] |
| 399 | if self.ReqFeatureIndex != 65535: |
| 400 | feature_indices.append (self.ReqFeatureIndex) |
| 401 | return unique_sorted (feature_indices) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 402 | |
| 403 | @add_method(fontTools.ttLib.tables.otTables.Script) |
| 404 | def subset_features (self, feature_indices): |
| 405 | if self.DefaultLangSys and not self.DefaultLangSys.subset_features (feature_indices): |
| 406 | self.DefaultLangSys = None |
| 407 | self.LangSysRecord = [l for l in self.LangSysRecord if l.LangSys.subset_features (feature_indices)] |
| 408 | self.LangSysCount = len (self.LangSysRecord) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 409 | return bool (self.LangSysCount or self.DefaultLangSys) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 410 | |
| 411 | @add_method(fontTools.ttLib.tables.otTables.Script) |
| 412 | def collect_features (self): |
Behdad Esfahbod | 2307c8b | 2013-07-23 11:18:13 -0400 | [diff] [blame] | 413 | feature_indices = [l.LangSys.collect_features () for l in self.LangSysRecord] |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 414 | if self.DefaultLangSys: |
| 415 | feature_indices.append (self.DefaultLangSys.collect_features ()) |
| 416 | return unique_sorted (sum (feature_indices, [])) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 417 | |
| 418 | @add_method(fontTools.ttLib.tables.otTables.ScriptList) |
| 419 | def subset_features (self, feature_indices): |
| 420 | self.ScriptRecord = [s for s in self.ScriptRecord if s.Script.subset_features (feature_indices)] |
| 421 | self.ScriptCount = len (self.ScriptRecord) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 422 | return bool (self.ScriptCount) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 423 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 424 | @add_method(fontTools.ttLib.tables.otTables.ScriptList) |
| 425 | def collect_features (self): |
| 426 | return unique_sorted (sum ((s.Script.collect_features () for s in self.ScriptRecord), [])) |
| 427 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 428 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 429 | def subset_glyphs (self, glyphs): |
| 430 | lookup_indices = self.table.LookupList.subset_glyphs (glyphs) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 431 | self.subset_lookups (lookup_indices) |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 432 | self.prune_lookups () |
| 433 | return True |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 434 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 435 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 436 | def subset_lookups (self, lookup_indices): |
| 437 | "Retrains specified lookups, then removes empty features, language systems, and scripts." |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 438 | self.table.LookupList.subset_lookups (lookup_indices) |
| 439 | feature_indices = self.table.FeatureList.subset_lookups (lookup_indices) |
| 440 | self.table.ScriptList.subset_features (feature_indices) |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 441 | |
Behdad Esfahbod | 78661bb | 2013-07-23 10:23:42 -0400 | [diff] [blame] | 442 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
| 443 | def prune_lookups (self): |
| 444 | "Remove unreferenced lookups" |
| 445 | feature_indices = self.table.ScriptList.collect_features () |
| 446 | lookup_indices = self.table.FeatureList.collect_lookups (feature_indices) |
| 447 | lookup_indices = self.table.LookupList.closure_lookups (lookup_indices) |
| 448 | self.subset_lookups (lookup_indices) |
| 449 | |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 450 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
| 451 | def subset_feature_tags (self, feature_tags): |
| 452 | feature_indices = [i for (i,f) in enumerate (self.table.FeatureList.FeatureRecord) if f.FeatureTag in feature_tags] |
| 453 | self.table.FeatureList.subset_features (feature_indices) |
| 454 | self.table.ScriptList.subset_features (feature_indices) |
| 455 | |
| 456 | @add_method(fontTools.ttLib.getTableClass('GSUB'), fontTools.ttLib.getTableClass('GPOS')) |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 457 | def prune_pre_subset (self, options): |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 458 | if 'layout-features' in options: |
| 459 | self.subset_feature_tags (options['layout-features']) |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 460 | self.prune_lookups () |
| 461 | return True |
| 462 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 463 | @add_method(fontTools.ttLib.getTableClass('GDEF')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 464 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 465 | table = self.table |
| 466 | if table.LigCaretList: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 467 | indices = table.LigCaretList.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 468 | table.LigCaretList.LigGlyph = [table.LigCaretList.LigGlyph[i] for i in indices] |
| 469 | table.LigCaretList.LigGlyphCount = len (table.LigCaretList.LigGlyph) |
| 470 | if not table.LigCaretList.LigGlyphCount: |
| 471 | table.LigCaretList = None |
| 472 | if table.MarkAttachClassDef: |
| 473 | table.MarkAttachClassDef.classDefs = {g:v for g,v in table.MarkAttachClassDef.classDefs.items() if g in glyphs} |
| 474 | if not table.MarkAttachClassDef.classDefs: |
| 475 | table.MarkAttachClassDef = None |
| 476 | if table.GlyphClassDef: |
| 477 | table.GlyphClassDef.classDefs = {g:v for g,v in table.GlyphClassDef.classDefs.items() if g in glyphs} |
| 478 | if not table.GlyphClassDef.classDefs: |
| 479 | table.GlyphClassDef = None |
| 480 | if table.AttachList: |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 481 | indices = table.AttachList.Coverage.subset_glyphs (glyphs) |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 482 | table.AttachList.AttachPoint = [table.AttachList.AttachPoint[i] for i in indices] |
| 483 | table.AttachList.GlyphCount = len (table.AttachList.AttachPoint) |
| 484 | if not table.AttachList.GlyphCount: |
| 485 | table.AttachList = None |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 486 | return bool (table.LigCaretList or table.MarkAttachClassDef or table.GlyphClassDef or table.AttachList) |
Behdad Esfahbod | efb984a | 2013-07-21 22:26:16 -0400 | [diff] [blame] | 487 | |
Behdad Esfahbod | fd3923e | 2013-07-22 12:48:17 -0400 | [diff] [blame] | 488 | @add_method(fontTools.ttLib.getTableClass('kern')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 489 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 5270ec4 | 2013-07-22 12:57:02 -0400 | [diff] [blame] | 490 | for t in self.kernTables: |
| 491 | t.kernTable = {(a,b):v for ((a,b),v) in t.kernTable.items() if a in glyphs and b in glyphs} |
| 492 | self.kernTables = [t for t in self.kernTables if t.kernTable] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 493 | return bool (self.kernTables) |
Behdad Esfahbod | efb984a | 2013-07-21 22:26:16 -0400 | [diff] [blame] | 494 | |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 495 | @add_method(fontTools.ttLib.getTableClass('hmtx'), fontTools.ttLib.getTableClass('vmtx')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 496 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 497 | self.metrics = {g:v for (g,v) in self.metrics.items() if g in glyphs} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 498 | return bool (self.metrics) |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 499 | |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 500 | @add_method(fontTools.ttLib.getTableClass('hdmx')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 501 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 502 | self.hdmx = {s:{g:v for (g,v) in l.items() if g in glyphs} for (s,l) in self.hdmx.items()} |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 503 | return bool (self.hdmx) |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 504 | |
Behdad Esfahbod | e45d6af | 2013-07-22 15:29:17 -0400 | [diff] [blame] | 505 | @add_method(fontTools.ttLib.getTableClass('VORG')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 506 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | e45d6af | 2013-07-22 15:29:17 -0400 | [diff] [blame] | 507 | self.VOriginRecords = {g:v for (g,v) in self.VOriginRecords.items() if g in glyphs} |
| 508 | self.numVertOriginYMetrics = len (self.VOriginRecords) |
| 509 | return True # Never drop; has default metrics |
| 510 | |
Behdad Esfahbod | 8c646f6 | 2013-07-22 15:06:23 -0400 | [diff] [blame] | 511 | @add_method(fontTools.ttLib.getTableClass('post')) |
Behdad Esfahbod | 4264824 | 2013-07-23 12:56:06 -0400 | [diff] [blame^] | 512 | def prune_pre_subset (self, glyphs): |
| 513 | if 'glyph-names' in options and not options['glyph-names']: |
| 514 | self.formatType = 3.0 |
| 515 | return True |
| 516 | |
| 517 | @add_method(fontTools.ttLib.getTableClass('post')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 518 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 4264824 | 2013-07-23 12:56:06 -0400 | [diff] [blame^] | 519 | self.extraNames = [] # This seems to do it |
Behdad Esfahbod | c9dec9d | 2013-07-23 10:28:47 -0400 | [diff] [blame] | 520 | return True |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 521 | |
Behdad Esfahbod | 861d915 | 2013-07-22 16:47:24 -0400 | [diff] [blame] | 522 | @add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 523 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 861d915 | 2013-07-22 16:47:24 -0400 | [diff] [blame] | 524 | self.glyphs = {g:v for (g,v) in self.glyphs.items() if g in glyphs} |
| 525 | self.glyphOrder = [g for g in self.glyphOrder if g in glyphs] |
Behdad Esfahbod | 4027dd8 | 2013-07-23 10:56:04 -0400 | [diff] [blame] | 526 | return bool (self.glyphs) |
Behdad Esfahbod | 861d915 | 2013-07-22 16:47:24 -0400 | [diff] [blame] | 527 | |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 528 | @add_method(fontTools.ttLib.getTableClass('glyf')) |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 529 | def prune_post_subset (self, options): |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 530 | if 'hinting' in options and not options['hinting']: |
| 531 | for g in self.glyphs.values (): |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 532 | g.expand (self) |
| 533 | g.program = fontTools.ttLib.tables.ttProgram.Program() |
| 534 | g.program.fromBytecode([]) |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 535 | return True |
| 536 | |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 537 | @add_method(fontTools.ttLib.getTableClass('cmap')) |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 538 | def subset_glyphs (self, glyphs): |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 539 | for t in self.tables: |
Behdad Esfahbod | 9453a36 | 2013-07-22 16:21:24 -0400 | [diff] [blame] | 540 | # For reasons I don't understand I need this here |
| 541 | # to force decompilation of the cmap format 14. |
| 542 | try: |
| 543 | getattr (t, "asdf") |
| 544 | except AttributeError: |
| 545 | pass |
Behdad Esfahbod | b13d790 | 2013-07-22 16:01:15 -0400 | [diff] [blame] | 546 | if t.format == 14: |
Behdad Esfahbod | 9453a36 | 2013-07-22 16:21:24 -0400 | [diff] [blame] | 547 | # XXX We drop all the default-UVS mappings (g==None) |
Behdad Esfahbod | b13d790 | 2013-07-22 16:01:15 -0400 | [diff] [blame] | 548 | t.uvsDict = {v:[(u,g) for (u,g) in l if g in glyphs] for (v,l) in t.uvsDict.items()} |
| 549 | t.uvsDict = {v:l for (v,l) in t.uvsDict.items() if l} |
| 550 | else: |
| 551 | t.cmap = {u:g for (u,g) in t.cmap.items() if g in glyphs} |
| 552 | self.tables = [t for t in self.tables if (t.cmap if t.format != 14 else t.uvsDict)] |
Behdad Esfahbod | 7e4bfc3 | 2013-07-22 18:47:32 -0400 | [diff] [blame] | 553 | # XXX Convert formats when needed |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 554 | return bool (self.tables) |
| 555 | |
| 556 | |
| 557 | @add_method(fontTools.ttLib.getTableClass('cmap')) |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 558 | def prune_pre_subset (self, options): |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 559 | # Drop non-Unicode / non-Symbol cmaps |
| 560 | # TODO Add option for this |
| 561 | # TODO Only keep one subtable? |
| 562 | self.tables = [t for t in self.tables if t.platformID == 3 and t.platEncID in [0, 1, 10]] |
Behdad Esfahbod | 0716eb4 | 2013-07-23 10:47:03 -0400 | [diff] [blame] | 563 | # For now, drop format=0 which can't be subset_glyphs easily? |
Behdad Esfahbod | f3744d9 | 2013-07-22 17:04:04 -0400 | [diff] [blame] | 564 | self.tables = [t for t in self.tables if t.format != 0] |
Behdad Esfahbod | 8b411f3 | 2013-07-23 11:24:20 -0400 | [diff] [blame] | 565 | return bool (self.tables) |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 566 | |
| 567 | @add_method(fontTools.ttLib.getTableClass('name')) |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 568 | def prune_pre_subset (self, options): |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 569 | # TODO Make sure something remains? |
| 570 | # TODO Add option for this. |
| 571 | # TODO Drop even more (license, etc)? / Drop completely? |
| 572 | self.names = [n for n in self.names if n.platformID == 3 and n.platEncID == 1 and n.langID == 0x0409] |
| 573 | return bool (self.names) |
Behdad Esfahbod | 653e974 | 2013-07-22 15:17:12 -0400 | [diff] [blame] | 574 | |
Behdad Esfahbod | 8c646f6 | 2013-07-22 15:06:23 -0400 | [diff] [blame] | 575 | |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 576 | @add_method(fontTools.ttLib.getTableClass('glyf')) |
| 577 | def closure_glyphs (self, glyphs): |
Behdad Esfahbod | f8983b1 | 2013-07-23 11:22:11 -0400 | [diff] [blame] | 578 | glyphs = unique_sorted (glyphs) |
Behdad Esfahbod | 6640b93 | 2013-07-23 11:42:48 -0400 | [diff] [blame] | 579 | decompose = glyphs |
| 580 | # I don't know if component glyphs can be composite themselves. |
| 581 | # We handle them anyway. |
Behdad Esfahbod | f8983b1 | 2013-07-23 11:22:11 -0400 | [diff] [blame] | 582 | while True: |
| 583 | components = [] |
Behdad Esfahbod | 6640b93 | 2013-07-23 11:42:48 -0400 | [diff] [blame] | 584 | for g in decompose: |
Behdad Esfahbod | f8983b1 | 2013-07-23 11:22:11 -0400 | [diff] [blame] | 585 | gl = self[g] |
| 586 | if gl.isComposite (): |
| 587 | for c in gl.components: |
| 588 | if c.glyphName not in glyphs: |
| 589 | components.append (c.glyphName) |
| 590 | components = [c for c in components if c not in glyphs] |
| 591 | if not components: |
| 592 | return glyphs |
Behdad Esfahbod | 6640b93 | 2013-07-23 11:42:48 -0400 | [diff] [blame] | 593 | decompose = unique_sorted (components) |
| 594 | glyphs.extend (components) |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 595 | |
| 596 | |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 597 | drop_tables_default = ['BASE', 'JSTF', 'DSIG', 'EBDT', 'EBLC', 'EBSC', 'PCLT', 'LTSH', 'VDMX'] |
| 598 | no_subset_tables = ['gasp', 'head', 'hhea', 'maxp', 'vhea', 'OS/2', 'loca', 'name', 'cvt ', 'fpgm', 'prep'] |
| 599 | hinting_tables = ['cvt ', 'fpgm', 'prep'] |
Behdad Esfahbod | 29df046 | 2013-07-23 11:05:25 -0400 | [diff] [blame] | 600 | |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 601 | # Based on HarfBuzz shapers |
| 602 | layout_features_dict = { |
| 603 | # Default shaper |
| 604 | 'common': ['ccmp', 'liga', 'locl', 'mark', 'mkmk', 'rlig'], |
| 605 | 'horizontal': ['calt', 'clig', 'curs', 'kern', 'rclt'], |
| 606 | 'vertical': ['valt', 'vert', 'vkrn', 'vpal', 'vrt2'], |
| 607 | 'ltr': ['ltra', 'ltrm'], |
| 608 | 'rtl': ['rtla', 'rtlm'], |
| 609 | # Complex shapers |
| 610 | 'arabic': ['init', 'medi', 'fina', 'isol', 'med2', 'fin2', 'fin3'], |
| 611 | 'hangul': ['ljmo', 'vjmo', 'tjmo'], |
| 612 | 'tibetal': ['abvs', 'blws', 'abvm', 'blwm'], |
| 613 | 'indic': ['nukt', 'akhn', 'rphf', 'rkrf', 'pref', 'blwf', 'half', 'abvf', 'pstf', 'cfar', 'vatu', 'cjct', |
| 614 | 'init', 'pres', 'abvs', 'blws', 'psts', 'haln', 'dist', 'abvm', 'blwm'], |
| 615 | } |
| 616 | layout_features_all = unique_sorted (sum (layout_features_dict.values (), [])) |
| 617 | |
Behdad Esfahbod | 29df046 | 2013-07-23 11:05:25 -0400 | [diff] [blame] | 618 | |
Behdad Esfahbod | 75e14fc | 2013-07-22 14:49:54 -0400 | [diff] [blame] | 619 | # TODO OS/2 ulUnicodeRange / ulCodePageRange? |
Behdad Esfahbod | 1e3551a | 2013-07-22 18:03:10 -0400 | [diff] [blame] | 620 | # TODO Drop unneeded GSUB/GPOS entries |
Behdad Esfahbod | 56ebd04 | 2013-07-22 13:02:24 -0400 | [diff] [blame] | 621 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 622 | if __name__ == '__main__': |
| 623 | |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 624 | import sys, time |
| 625 | |
| 626 | start_time = time.time () |
| 627 | last_time = start_time |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 628 | |
Behdad Esfahbod | 4ae8171 | 2013-07-22 11:57:13 -0400 | [diff] [blame] | 629 | verbose = False |
| 630 | if "--verbose" in sys.argv: |
| 631 | verbose = True |
| 632 | sys.argv.remove ("--verbose") |
Behdad Esfahbod | 350a527 | 2013-07-22 12:02:16 -0400 | [diff] [blame] | 633 | xml = False |
| 634 | if "--xml" in sys.argv: |
| 635 | xml = True |
| 636 | sys.argv.remove ("--xml") |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 637 | timing = False |
| 638 | if "--timing" in sys.argv: |
| 639 | timing = True |
| 640 | sys.argv.remove ("--timing") |
| 641 | |
| 642 | def lapse (what): |
| 643 | if not timing: |
| 644 | return |
| 645 | global last_time |
| 646 | new_time = time.time () |
| 647 | print "Took %0.3fs to %s" % (new_time - last_time, what) |
| 648 | last_time = new_time |
Behdad Esfahbod | 4ae8171 | 2013-07-22 11:57:13 -0400 | [diff] [blame] | 649 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 650 | if len (sys.argv) < 3: |
| 651 | print >>sys.stderr, "usage: pyotlss.py font-file glyph..." |
| 652 | sys.exit (1) |
| 653 | |
| 654 | fontfile = sys.argv[1] |
| 655 | glyphs = sys.argv[2:] |
| 656 | |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 657 | # Always include .notdef; anything else? |
Behdad Esfahbod | 0f86ce9 | 2013-07-22 17:30:31 -0400 | [diff] [blame] | 658 | glyphs.append ('.notdef') |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 659 | |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 660 | font = fontTools.ttx.TTFont (fontfile) |
Behdad Esfahbod | 0f86ce9 | 2013-07-22 17:30:31 -0400 | [diff] [blame] | 661 | font.disassembleInstructions = False |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 662 | lapse ("load font") |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 663 | |
| 664 | names = font.getGlyphNames() |
| 665 | # Convert to glyph names |
| 666 | glyphs = [g if g in names else font.getGlyphName(int(g)) for g in glyphs] |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 667 | lapse ("compile glyph list") |
Behdad Esfahbod | 02b9206 | 2013-07-21 18:40:59 -0400 | [diff] [blame] | 668 | |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 669 | glyphs_requested = glyphs[:] |
Behdad Esfahbod | 2a784ac | 2013-07-22 17:00:36 -0400 | [diff] [blame] | 670 | # Close over composite glyphs |
| 671 | if 'glyf' in font: |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 672 | if verbose: |
| 673 | print "Closing glyph list over 'glyf' components." |
| 674 | glyphs_closed = font['glyf'].closure_glyphs (glyphs) |
| 675 | if verbose: |
| 676 | print "Before: %d glyphs; after: %d glyphs" % (len (glyphs_requested), len (glyphs_closed)) |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 677 | lapse ("close glyph list over 'glyf' components") |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 678 | else: |
| 679 | glyphs_closed = glyphs |
| 680 | del glyphs |
| 681 | |
Behdad Esfahbod | c9dec9d | 2013-07-23 10:28:47 -0400 | [diff] [blame] | 682 | if verbose: |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 683 | print "Retaining %d glyphs: " % len (glyphs_closed) |
Behdad Esfahbod | 2a784ac | 2013-07-22 17:00:36 -0400 | [diff] [blame] | 684 | |
Behdad Esfahbod | 350a527 | 2013-07-22 12:02:16 -0400 | [diff] [blame] | 685 | if xml: |
Behdad Esfahbod | 4ae8171 | 2013-07-22 11:57:13 -0400 | [diff] [blame] | 686 | import xmlWriter |
| 687 | writer = xmlWriter.XMLWriter (sys.stdout) |
Behdad Esfahbod | 4e214e4 | 2013-07-22 13:13:49 -0400 | [diff] [blame] | 688 | |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 689 | options = { |
| 690 | 'layout-features': layout_features_all, |
| 691 | 'hinting': False, |
Behdad Esfahbod | 4264824 | 2013-07-23 12:56:06 -0400 | [diff] [blame^] | 692 | 'glyph-names': False, |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 693 | 'drop-tables': drop_tables_default |
Behdad Esfahbod | 356c42e | 2013-07-23 12:10:46 -0400 | [diff] [blame] | 694 | } |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 695 | |
Behdad Esfahbod | 8842ce2 | 2013-07-22 13:01:33 -0400 | [diff] [blame] | 696 | for tag in font.keys(): |
Behdad Esfahbod | 4e214e4 | 2013-07-22 13:13:49 -0400 | [diff] [blame] | 697 | |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 698 | if tag == 'GlyphOrder': |
| 699 | continue |
| 700 | |
Behdad Esfahbod | ed98c61 | 2013-07-23 12:37:41 -0400 | [diff] [blame] | 701 | if tag in options['drop-tables'] or \ |
| 702 | (not options['hinting'] and tag in hinting_tables): |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 703 | if verbose: |
| 704 | print tag, "dropped." |
Behdad Esfahbod | 4e214e4 | 2013-07-22 13:13:49 -0400 | [diff] [blame] | 705 | del font[tag] |
| 706 | continue |
| 707 | |
Behdad Esfahbod | 8842ce2 | 2013-07-22 13:01:33 -0400 | [diff] [blame] | 708 | clazz = fontTools.ttLib.getTableClass(tag) |
Behdad Esfahbod | 4e214e4 | 2013-07-22 13:13:49 -0400 | [diff] [blame] | 709 | |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 710 | if hasattr (clazz, 'prune_pre_subset'): |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 711 | table = font[tag] |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 712 | retain = table.prune_pre_subset (options) |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 713 | lapse ("prune '%s'" % tag) |
| 714 | if not retain: |
Behdad Esfahbod | 8b411f3 | 2013-07-23 11:24:20 -0400 | [diff] [blame] | 715 | if verbose: |
| 716 | print tag, "pruned to empty; dropped." |
| 717 | del font[tag] |
| 718 | continue |
| 719 | else: |
| 720 | if verbose: |
| 721 | print tag, "pruned." |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 722 | |
| 723 | if tag in no_subset_tables: |
| 724 | if verbose: |
| 725 | print tag, "subsetting not needed." |
Behdad Esfahbod | 96f4704 | 2013-07-23 12:21:34 -0400 | [diff] [blame] | 726 | elif hasattr (clazz, 'subset_glyphs'): |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 727 | table = font[tag] |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 728 | if tag in ['GSUB', 'GPOS', 'GDEF', 'cmap', 'kern', 'post', 'cmap']: # What else? |
| 729 | glyphs = glyphs_requested |
| 730 | else: |
| 731 | glyphs = glyphs_closed |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 732 | retain = table.subset_glyphs (glyphs) |
| 733 | lapse ("subset '%s'" % tag) |
| 734 | if not retain: |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 735 | if verbose: |
| 736 | print tag, "subsetted to empty; dropped." |
Behdad Esfahbod | 8b411f3 | 2013-07-23 11:24:20 -0400 | [diff] [blame] | 737 | del font[tag] |
| 738 | continue |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 739 | else: |
| 740 | if verbose: |
| 741 | print tag, "subsetted." |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 742 | del glyphs |
Behdad Esfahbod | 4ae8171 | 2013-07-22 11:57:13 -0400 | [diff] [blame] | 743 | else: |
Behdad Esfahbod | 350a527 | 2013-07-22 12:02:16 -0400 | [diff] [blame] | 744 | if verbose: |
Behdad Esfahbod | 61addb4 | 2013-07-23 11:03:49 -0400 | [diff] [blame] | 745 | print tag, "NOT subset; don't know how to subset." |
| 746 | continue |
| 747 | |
Behdad Esfahbod | d7b6f8f | 2013-07-23 12:46:52 -0400 | [diff] [blame] | 748 | if hasattr (clazz, 'prune_post_subset'): |
| 749 | table = font[tag] |
| 750 | retain = table.prune_post_subset (options) |
| 751 | lapse ("prune '%s'" % tag) |
| 752 | if not retain: |
| 753 | if verbose: |
| 754 | print tag, "pruned to empty; dropped." |
| 755 | del font[tag] |
| 756 | continue |
| 757 | else: |
| 758 | if verbose: |
| 759 | print tag, "pruned." |
| 760 | |
| 761 | |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 762 | |
| 763 | glyphOrder = font.getGlyphOrder() |
Behdad Esfahbod | 0fe6a51 | 2013-07-23 11:17:35 -0400 | [diff] [blame] | 764 | glyphOrder = [g for g in glyphOrder if g in glyphs_closed] |
Behdad Esfahbod | c716044 | 2013-07-22 14:29:08 -0400 | [diff] [blame] | 765 | font.setGlyphOrder (glyphOrder) |
| 766 | font._buildReverseGlyphOrderDict () |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 767 | lapse ("subset GlyphOrder") |
Behdad Esfahbod | d1d41bc | 2013-07-21 23:15:32 -0400 | [diff] [blame] | 768 | |
Behdad Esfahbod | 0f86ce9 | 2013-07-22 17:30:31 -0400 | [diff] [blame] | 769 | if xml: |
| 770 | for tag in font.keys(): |
| 771 | writer.begintag (tag) |
| 772 | writer.newline () |
| 773 | font[tag].toXML(writer, font) |
| 774 | writer.endtag (tag) |
| 775 | writer.newline () |
| 776 | |
Behdad Esfahbod | 77cda41 | 2013-07-22 11:46:50 -0400 | [diff] [blame] | 777 | font.save (fontfile + '.subset') |
Behdad Esfahbod | b70b498 | 2013-07-23 11:38:26 -0400 | [diff] [blame] | 778 | lapse ("compile and save font") |
| 779 | |
| 780 | last_time = start_time |
| 781 | lapse ("make one with everything (TOTAL TIME)") |